#components-form-demo-control-ref .ant-btn {
  margin-right: 8px;
}

.studentclass {
  .ant-form {
    display: flex;
    flex-direction: row;

  }

  width: 100%;
  height: 100%;

  .ant-input {
    width: 150px;
  }

  .ant-select {
    width: 150px;
  }

  .ant-row {
    width: 160px;
  }
  .ant-btn{
    width: 100px;
  }
}